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soc: soc_ti_k3: update j721e revision numbering

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There is a 4 bit VARIANT number inside the JTAGID register that TI
increments any time a new variant for a chip is produced. Each
family of TI's SoCs uses a different versioning scheme based off
that VARIANT number.

CC: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Bryan Brattlof <bb@ti.com>
This commit is contained in:
Bryan Brattlof
2022-01-26 16:07:33 -06:00
committed by Tom Rini
parent 8886341aa6
commit 708f54f583
1 changed files with 27 additions and 13 deletions
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40
drivers/soc/soc_ti_k3.c
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@@ -16,9 +16,6 @@
#define AM64X 0xbb38
#define J721S2 0xbb75
#define REV_SR1_0 0
#define REV_SR2_0 1
#define JTAG_ID_VARIANT_SHIFT 28
#define JTAG_ID_VARIANT_MASK (0xf << 28)
#define JTAG_ID_PARTNO_SHIFT 12
@@ -59,25 +56,42 @@ static const char *get_family_string(u32 idreg)
return family;
}
static char *j721e_rev_string_map[] = {
"1.0", "1.1",
};
static char *am65x_rev_string_map[] = {
"1.0", "2.0",
};
static const char *get_rev_string(u32 idreg)
{
const char *revision;
u32 rev;
u32 soc;
rev = (idreg & JTAG_ID_VARIANT_MASK) >> JTAG_ID_VARIANT_SHIFT;
soc = (idreg & JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT;
switch (rev) {
case REV_SR1_0:
revision = "1.0";
break;
case REV_SR2_0:
revision = "2.0";
break;
switch (soc) {
case J721E:
if (rev > ARRAY_SIZE(j721e_rev_string_map))
goto bail;
return j721e_rev_string_map[rev];
case AM65X:
if (rev > ARRAY_SIZE(am65x_rev_string_map))
goto bail;
return am65x_rev_string_map[rev];
case AM64X:
case J7200:
default:
revision = "Unknown Revision";
if (!rev)
return "1.0";
};
return revision;
bail:
return "Unknown Revision";
}
static int soc_ti_k3_get_family(struct udevice *dev, char *buf, int size)